Whats happening to my corals?

[Pegasus]

It's not uncommon for Angels to change their habits. You did after all change their environment and surroundings.

As far a chemical causes go, no sorry I don't. Just know that Acros can be finicky.

I assume that you transfered all the old water from the old tank therefore the addition of the new top up water shouldn't have caused that tank to recycle.
Then again...? Any amount of a spike, no matter how small, might have been enough to kill the more sensitive corals.


Larry